The name Donald is a Scottish baby name. In Scottish the meaning of the name Donald is: Great cheif, world mighty. From the Gaelic Domhnall. The name Donald has been borne by a number of early Scottish kings. Famous Bearers: Billionaire Donald Trump; actor Donald Sutherland.
1. the striking of one thing against another; collision. 2. influence; effect: the impact of Einstein on modern physics. 3. a forcible impinging: the tremendous impact of the shot. 4. the force exerted by a new idea, concept, technology, or ideology: the impact of the industrial revolution.
mean point of impact. The point whose coordinates are the arithmetic means of the coordinates of the separate points of impact/burst of a finite number of projectiles fired or released at the same aiming point under a given set of conditions.